Excuse me, you ________ open the door before the bus stops.
| A．needn't | B．may not |
| C．don't have to | D．mustn't |
—Could I use your computer?—Sorry, I will ________ it.
| A．work in | B．work at | C．work on | D．work over |
—Could I borrow your book?—Of course, you _______.
| A．can | B．must | C．should | D．will |
---- Last night,you forget _____off the computer when you went to bed.
----- Really?I remember _____off.
| A．to turn,to turn | B．to turn, turning |
| C．turning,turning | D．turning,to turn |
Look! There are many people ______ in the lake.
| A．are swimming | B．to swim |
| C．swam | D．swimming |
If you don’t know how to spell the new words, please_____in the dictionary.
| A．look up them | B．look it up |
| C．look them up | D．look up it |